N~otes on Certain Terrestrial MollusTcs. 



75 



Habitat. In damp moist places, among leaves. Astoria, 

 Oregon. 



Remarks. Two figures of the species are annexed. The 

 aspect of the upper surface of the shell is very like that of 

 Z. multidentatus, Binney. 



Fig 1. Zonites Lansingi. 



I am indebted to Mr. Henry Hemphill for this interesting 

 little species, and dedicate it to my young friend, Mr. A. 

 Ten Eyck Lansing of Burlington, New Jersey, a very prom- 

 ising student, to whom Mr. W. G. Binney and myself are 

 much indebted for assistance in our examination of the den- 

 tition of terrestrial mollusks. 



One specimen of Z. Lansingi, appearing to have the ani- 

 mal within it, was crushed between two glass slides, enabling 

 Mr. Binney, without the use of potash, satisfactorily to ob- 

 serve the jaw and teeth remaining uninjured in the tissues of 

 the animal. I am indebted to him for the subjoined particulars. 



Jaw (fig. 2, A) low, wide, slightly arcuate ; ends scarcely attenuated, 

 blunt; cutting margin without median projection; anterior surface with 

 fourteen, broad, unequal, crowded, flat ribs, slightly denticulating either 

 margin. 



